/*******************************************************************************
* Copyright (c) 2000, 2012 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.examples.paint;
import org.eclipse.swt.graphics.*;
/**
* Superinterface for all drawing objects.
* All drawing objects know how to render themselved to the screen and can draw a
* temporary version of themselves for previewing the general appearance of the
* object onscreen before it gets committed.
*/
public abstract class Figure {
/**
* Draws this object.
*
* @param fdc a parameter block specifying drawing-related information
*/
public abstract void draw(FigureDrawContext fdc);
/**
* Computes the damaged screen region caused by drawing this object (imprecise), then
* appends it to the supplied region.
*
* @param fdc a parameter block specifying drawing-related information
* @param region a region to which additional damage areas will be added
*/
public abstract void addDamagedRegion(FigureDrawContext fdc, Region region);
}